PFT on NBC Sports Network: Troy Polamalu

Pro Football Talk on NBC Sports Network concludes the work week with an interview with a star defender coming off an injury-shortened 2012 campaign. Erik Kuselias chats one-on-one with Steelers safety Troy Polamalu, whose remarks on how the NFL changes its rules drew attention earlier Friday. Also, Mike Florio, Shaun King and Kuselias take a closer look at…